I immediately recognized that it was an earthquake, a big one, since I had some experiences of terrible earthquakes, such as the 2011 off the Pacific coast of Tohoku Earthquake in 2011 or the 1995 Great Hanshin-Awaji Earthquake. I was really scared, but luckily, the shake stopped in dozens of seconds.
I called or emailed to my wife, my parents, and my brother, none of whom are injured. What a relief. The Hospital I work for has not affected except for a clack on the wall in the internal department, as shown in the middle picture. On the day, I could not come back home because most public transportation become out of service, but it was not a big deal.
A week has passed since the disaster. Osaka monorail seems to resume tomorrow (too late to wait, though). Minor earthquakes infrequently occur.
A new week starts. May peace prevail in Osaka from next week.